Home / 99,906.22-137,727.57-61,640.20

Finding the Fourth Proportional to 99,906.22, 137,727.57 and 61,640.20

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Solution

The fourth proportional to 99,906.22, 137,727.57 and 61,640.20 is: 84,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,906.22 : 137,727.57 = 61,640.20 : x
  2. Step 2: Convert to fraction form
    99,906.22/137,727.57 = 61,640.20/x
  3. Step 3: Cross multiply
    99,906.22x = 137,727.57 × 61,640.20
  4. Step 4: Simplify right side
    99,906.22x = 8,489,554,960.31
  5. Step 5: Solve for x
    x = 8,489,554,960.31/99,906.22
  6. Step 6: Final answer
    x = 84,975.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.